We’ve introduced a new type of Permission : the Operator permissions. This permission type allows for control over who has visibility on which operators or operator groups. Also, it allows for non-Administrator operators to be given the permission to add new operators to the account.
Note that by default, the Everyone operator group has the ‘See operators’ permission on the Everyone group, meaning that every operator in the account can see every other operator in the account. This permission can be removed in the settings of the Everyone operator group.